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Articles by B. Ibrahim
Total Records ( 2 ) for B. Ibrahim
  K. Zaleha , B. Ibrahim , B. Akbar John and B.Y. Kamaruzzaman
  Recent investigations on harpacticoid copepods have demonstrated their higher nutritional values compared to Artemia and rotifer. Nevertheless, studies on the potential use of tropical harpacticoid copepods as live feed in aquaculture are still limited. The present study was carried out to compare the generation time between selected harpacticoid species cultured in laboratory condition as an early step to choose a potential live feed for aquaculture practices. Some estuarine species of harpacticoids were isolated from Merchang river mouth, an estuary of the South China Sea in Terengganu and undergone trial culture procedure. Three species (Paradactylopodia oculata, Schizopera knabeni and Robertsonia knoxi) were successfully adapted to the laboratory condition thus their generation time were recorded. Copepod samples were cultured under controlled laboratory condition at temperature 25±1°C and salinity 27±1 ppt for 40 days and fed with 0.1 mL of baker’s yeast (0.02 g/L/day). The mean generation time (day) was different for each species where P. oculata showed the long generation time (17.19±4.74 days) followed by S. knabeni (10.19±3.51 days) and R. knoxi (8.93±1.00 days). The species with short generation times could be a better choice for fish larval rearing and hatchery activity due to the early time of nauplii production and hence we suggest the R. knoxi could be used as a potential live feed (on the basis of their generation time) in aquaculture practices.
  Y.A. Geidam , H. Usman , M.B. Abubakar and B. Ibrahim
  Plants are used widely in the tropics and sub-tropical Africa and Asia for the treatment and cure of various illnesses such as malaria, diarrhoea, burns, gonorrhoea, stomach disorders and other infectious diseases; among which are livestock and poultry related diseases. Present studies on the preliminary phytochemical composition of the leaf of this plant revealed the presence of flavonoids, tannins, saponins, phenols lectins, triterpenes and carotenoids among others. Studies on the swab content from the navel of the day old chicks of both strains (broilers and layers) had revealed the presence of several gram positive and gram negative organisms such as E. coli, Staphylococcus sp., Streptococcus sp., Proteus sp., Klebsiella sp. and Corynaebacterium. The susceptibility tests on the isolated organisms by the extract under study had showed an appreciable dose dependant zone of inhibition ranging from 13-25 mm. The activity of the extract (400 mg mL-1) can be favourably compared with that of the standard antibiotic-Oxytetracycline (10 mg mL-1) particularly between the E. coli and Streptococcus with 25:30 mm and 20:22 mm as inhibition zone respectively where no significant difference was observed. The extract exhibited a highest MIC of 12.5 mg mL-1 against Staphylococcus sp., while concentration of 25.0 mg mL-1 was noted as the MIC values against both E. coli and Streptococcus sp.
 
 
 
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